Ruler.



Patented May 2|, |90i..

C. E.. JEWELL. RULER.

n (Applicatinn led. Oct. 9, 1900.) (No Model.)

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UNITED v STATES PATENT EEICE.

CHARLES EDWIN JEWELL, OE SENECA FALLS, NEW YORK.

RU LER.

SPECIFICATION forming "part of Letters Patent No. 674,648, dated May 21, 1901.

Application filed October 9, 1900. Serial N0. 32,480. (No model.)

To @ZZ whom, it may concern:

Be it known that I, CHARLES EDWIN J Ew- ELL, a citizen of the United States, residing at Seneca Falls, in the county of Seneca and State of New York, have invented certain new aud. useful Improvementsin Rulers, of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to rulers; and the object thereof is to provide an improved device of this class which may be used as an ordinary measuring-rule, but which is particularly designed for use by mechanical draftsmen, accountants, and othersin drawing parallel lines forruling blank forms, books, dto.; and with this and other objects in View the invention consists in a rule or ruler constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which the separate parts of my improvement are designated by the same reference characters in each of the views, and in which- Eigure l is a plan view of my improved ruler, and Fig. 2 a cross-section thereof on the line 2 2.

In the practice of my invention I provide a deviceof the class specified comprising an oblong body portion a, which may be made of wood, hard rubber, or any preferred material, and it is preferably beveled at one edge, as shown at b, the opposite edge, which is known as the back of the ruler, being provided with a metal casing c, the edges of which are set into the top and bottom portions of the body of the ruler, as shown at d.

The body portion of the rule is provided with a longitudinal slot or opening e, which extends the full length thereof and which divides said body portion into two separate parts, which are connected by end plates f, which are secured thereto by screws or nails g or in any desired manner, and mounted in the longitudinal slot or opening e is a shaft or rod h, provided with end .bearings in the plates f, and the separate parts of the body portion of the rule are connected at the top thereof by transverse strips c,which are preferably secured thereto by screws Z and which are designed to stiffen the separate parts of the body portion of the rule and to keep the same from warping or twisting.

The shaft or rod h is provided at intervals with rubber bands m, which are secured thereon and which form bearings for the rule in moving it from point to point on the book, blank, or other paper.

It will be understood that the rubber bands m and the shaft or rod h together constitute a roller which'is free to'turn in the bearings at the ends of said shaftor rod, andthe transverse thickness of the said roller, taken through the shaft or rod and through the rubber bauds m, is greater than the thickness of the body portion of the ruler, whereby the said rubber bands project below the bottom surface of the ruler, as clearly shown in Fig. 2.

In using this device as a ruler it is placed with the bottom surface thereof on the surface to be ruled and rests upon the rubber bands which form a part of the roller and which turn therewith, and by means of this construction the device may be freely moved with one hand, while the lines are drawn with the other.

The rubber bands m are preferably serrated or corrugated on their outer surfaces, so as to prevent the ruler from slipping too freely in any direction, and my invention is not limited to the material of the shaft or rod h or of the bands m, and any suitable material may be employed for this purpose.

Having fully described my invention, I claim as new and desire to secure by Letters Patentl. Aruler provided with a longitudinal central space, and a roller mounted therein and having bearings at its opposite ends, and provided with annular portions which are greater in diameter than the thickness of the body portion ofthe ruler and which form bearings, substantially as shown and described.

2. A ruler, comprising a body portion composed of separate parts held together by end plates, and separated by a longitudinal central space, a shaft or rod mounted in said longitudinal central space, and having hearings in said end plates, said shaft or rod being provided at intervals with annular bearing-bands secured thereto, and the transverse diameter of which is greater than the IOO vthickness of the body portion of the ruler,

substantially as shown and described.

3. A ruler, comprising a body portion consisting of two longitudinal members connected at the ends by end plates and separated by a longitudinal central space, said members being also connected by cross-strips secured to the upper side thereof, and a roller mounted in said longitudinal central space, and having bearings in the end plates, said roller being provided at intervals with rnbber bands which are greater in diameter than the thickness of the body portion of the ruler, substantially as shown and described.

4. A ruler, the body portion of which conmyinvention I have signed my name, in presence of the subscribing Witnesses, this 6th day of October, 1900.

f CHARLES EDWIN JEWELL.

Witnesses:

CHAS. T. HALL, M. W. JACoBY. 

